Talk show host Montell Williams underwent an unnecessary double mastectomy at the age of 19, while in the military, that was the result of a misdiagnosis of male breast cancer. Williams never had reconstructive surgery, instead opting to bulk his chest back up through exercise. (Credit: Getty Images)

These celebrities have had double mastectomies for many reasons including preventive measures, cancer diagnoses and misdiagnoses....

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Angelina Jolie first announced that she had a double mastectomy in an OpEd for the New York Times in May of 2013. Her decision to undergo surgery, she explained, came after genetic testing revealed that she had BRCA gene-mutation, giving her an 87% chance of developing breast cancer.(Credit: AP)